System and method for vehicle based uninterruptable power supply

Abstract

A system and method for controlling a vehicle-based source of uninterruptable power is disclosed. The vehicle-based UPS includes an energy storage system located on-board a vehicle and configured to generate DC power transferable to an external load, and an DC-AC inverter connected to the on-board energy storage system to receive the DC power therefrom and invert the DC power to an AC power useable by the external load. The vehicle-based UPS also includes a charging device located on-board the vehicle and connected to the on-board energy storage system to provide recharging power thereto and a control system. The control system is configured to determine one of a state-of-charge (SOC) and a voltage of the energy storage system and selectively operate the charging device to provide the recharging power to the energy storage system to maintain the SOC or voltage of the energy storage system within a pre-determined range.

Description

BACKGROUND OF THE INVENTION[0001]The invention relates generally to an uninterruptable power supply (UPS) and, more particularly, to a vehicle-based UPS and system for controlling operation of the vehicle-based UPS.[0002]Emergency sources of power are known as important devices in various applications and industries for providing a safeguard against power outages. It is recognized that the need for dependable and long-lasting sources of emergency power may increase in the near future as utility grid failures become more prevalent. That is, due to the number and severity of storms (lightning, wind, fallen trees, ice, etc), the overload of the country's aging utility's transmission and distribution components, and the potential threat of terrorism, the likelihood of utility grid failures is increasing.[0003]Various types of devices are known for providing such emergency power. Devices such as a gasoline, diesel, propane, or other fueled version of an auxiliary or emergency generator a...

AI Technical Summary

Benefits of technology

[0006]The invention is a directed method and apparatus for controlling a vehicle-based source of uninterruptable power. An on-board energy storage system, charging device and control system are provided to form a vehicle-based uninterruptable power sup

Problems solved by technology

That is, due to the number and severity of storms (lightning, wind, fallen trees, ice, etc), the overload of the country's aging utility's transmission and distribution components, and the potential threat of terrorism, the likelihood of utility grid failures is increasing.

It is recognized, however, that UPS systems have their limitations.

A key issue with conventional UPS systems is whether the limited amount of energy that is stored in the UPS's battery is sufficient to operate the a device for an extended period of time.

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